Many thanks to all!
I will have to go through the installation of the Okie. Right now that is were I am leaning. The truck has had many owners and started life in Oklahome. I have never had to drop the drive shaft so I don't know if a repair has ever been done or not. I'll find out when I drop it I guess.
Besides the Okie and a gasket for the rear, what else should I order?
I just checked the transmission oil and is down a little bit since filling it about 50 miles or so.